+/**
+ * @brief Sets parent window of the window.
+ *
+ * After setting that, these windows do together when raise-up, lower and iconified/deiconified.
+ * Initially, the window is located on top of the parent. The window can go below parent by calling Lower().
+ * If parent's window stack is changed by calling Raise() or Lower(), child windows are located on top of the parent again.
+ *
+ * @param[in] window The window instance
+ * @param[in] parent The parent window instance
+ */
+DALI_ADAPTOR_API void SetParent( Window window, Window parent );
+
+/**
+ * @brief Unsets parent window of the window.
+ *
+ * After unsetting, the window is disconnected his parent window.
+ *
+ * @param[in] window The window instance
+ */
+DALI_ADAPTOR_API void Unparent( Window window );
+
+/**
+ * @brief Gets parent window of the window.
+ *
+ * @param[in] window The window instance
+ * @return The parent window of the window
+ */
+DALI_ADAPTOR_API Window GetParent( Window window );
+
+/**
+ * @brief Downcast sceneHolder to window
+ *
+ * @param[in] handle The handle need to downcast
+ * @return The window cast from SceneHolder
+ */
+DALI_ADAPTOR_API Window DownCast( BaseHandle handle );
+